The Lemon Index$1,500 middle bill · most between $964 and $1,900
Higher than the $1,200 middle bill owners of all 91 models reported.
Owners who gave their mileage: a middle of 62,000 miles (17 reports).
Toyota Prius owners reported paying a median of $1,500 for a ECM (engine computer) replacement, with the middle half of bills between $964 and $1,900. That's from 19 owner reports (19 complaints to NHTSA). Costs vary by shop and region.
What owners paid
- Under $50011%
- $500–$1,00016%
- $1,000–$2,50053%
- $2,500–$5,00021%
- $5,000 and up0%
Share of the 19 owner reports in each price band.
By model year
- 2004 Toyota Prius2too few for a middle
- 2005 Toyota Prius5$1,800 middle bill
- 2006 Toyota Prius6$1,000 middle bill
- 2007 Toyota Prius2too few for a middle
- 2008 Toyota Prius2too few for a middle
- 2009 Toyota Prius1too few for a middle
- 2010 Toyota Prius1too few for a middle
Reports per model year, with the middle bill where there are 3 or more. YouTube amounts count for the generation the video covers.
Keep going
- Toyota Prius reliability by year
- ECM (engine computer) replacement cost on every car
- Car symptoms and what they can mean
Other repairs Toyota Prius owners reported
ABS module replacement (63) · Brake booster replacement (39) · Brake repair (37) · Brake master cylinder replacement (16) · Wiring harness repair (12) · Steering rack replacement (8) · Water pump replacement (8) · Engine replacement (7) · Catalytic converter replacement (6) · Transmission replacement (5)
The details
How we count
Every number here is a repair bill an owner reported, never a shop's price list. Two sources: the bills owners wrote in their own complaints to the U.S. government (NHTSA), and the dollar amounts owners said out loud in YouTube repair and ownership videos. A figure counts for a repair when that repair is the part named nearest to it. Left out: purchase prices, payments, rentals, towing, warranties and deductibles, amounts under $50 or over $15,000, parts-only prices ("the part was $80 on Amazon"), bills for two different repairs named together, and money someone else paid. One number per complaint (or video) and repair: the biggest, so it's the bill, not the diagnosis fee.
The range is the middle half of the bills (the 25th to the 75th percentile), so one wild number can't swing it. Owners who complain to the government often had expensive repairs, so a typical bill can be lower. Costs vary by shop and region, by dealer vs independent shop, by parts and by miles. This is what owners reported, not a quote for your car.
Check the bills yourself
NHTSA complaint numbers (search them at nhtsa.gov): 11554031, 10904568, 10722465, 10690850, 10573894, 10453469, 10411085, 10396808, 10345796, 10296857, 10282711, 10272610 and more.
Quick answers
How much does ECM (engine computer) replacement cost on a Toyota Prius?
Toyota Prius owners reported a median of $1,500, and the middle half paid $964 to $1,900, from 19 owner reports. Costs vary by shop and region.
Is a Toyota Prius ECM (engine computer) replacement more expensive than on other cars?
The Toyota Prius middle bill of $1,500 is higher than the $1,200 owners of all 91 models we have reports for paid.
Where do these Toyota Prius repair costs come from?
From 19 complaints to NHTSA: what owners themselves said they paid. They aren't verified bills or a shop's quote.
Sources: NHTSA owner complaints and YouTube videos (amounts said out loud), sorted by The Lemon Index. Owner reports, not a price quote. Costs vary by shop and region.